[单选题]

欲测定样品中NaCO的含量,称试样0.2000g,滴定到终点时,消耗C(HSO)=0.2020mol/L硫酸溶液18.32ml,求样品中NaCO的含量(%)

A.98.0%

B.98.06%

C.97.85%

D.98.01%

E.97.05%

参考答案与解析: